package com.leicx.guli.cart.controller;

import com.leicx.guli.cart.service.CartService;
import com.leicx.guli.cart.vo.CartItemVo;
import com.leicx.guli.cart.vo.CartVo;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.annotation.Resource;
import java.util.List;
import java.util.concurrent.ExecutionException;

/**
 * @author daxiong
 * @date 2022/8/3 下午3:25
 */
@Controller
public class CartController {

    @Resource
    CartService cartService;

    @GetMapping("/currentUserCartItems")
    @ResponseBody
    public List<CartItemVo> getCurrentUserCartItems() {
        return cartService.getUserCartItems();
    }

    @GetMapping("/cart.html")
    public String cartListPage(Model model) throws ExecutionException, InterruptedException {
        // 快速得到用户信息
        CartVo cartVo = cartService.getCart();
        model.addAttribute("cart", cartVo);
        return "cartList";
    }

    /**
     * 添加商品到购物车
     * attributes.addFlashAttribute():模拟session的作用，将数据放在session中，可以在页面中取出，但是只能取一次
     * attributes.addAttribute():将数据放在url后面
     *
     * @return
     */
    @GetMapping(value = "/addCartItem")
    public String addCartItem(@RequestParam("skuId") Long skuId,
                              @RequestParam("num") Integer num,
                              RedirectAttributes attributes) throws ExecutionException, InterruptedException {

        cartService.addToCart(skuId, num);
        // attributes.addAttribute():将数据放在url后面
        attributes.addAttribute("skuId", skuId);
        return "redirect:http://cart.gulimall.com/addToCartSuccessPage.html";
    }

    /**
     * 跳转到添加购物车成功页面
     *
     * @param skuId
     * @param model
     * @return
     */
    @GetMapping(value = "/addToCartSuccessPage.html")
    public String addToCartSuccessPage(@RequestParam("skuId") Long skuId,
                                       Model model) {
        //重定向到成功页面。再次查询购物车数据即可
        CartItemVo cartItemVo = cartService.getCartItem(skuId);
        model.addAttribute("cartItem", cartItemVo);
        return "success";
    }

    /**
     * 商品是否选中
     *
     * @param skuId
     * @param checked
     * @return
     */
    @GetMapping(value = "/checkItem")
    public String checkItem(@RequestParam(value = "skuId") Long skuId,
                            @RequestParam(value = "checked") Integer checked) {
        cartService.checkItem(skuId, checked);
        return "redirect:http://cart.gulimall.com/cart.html";
    }

    /**
     * 改变商品数量
     *
     * @param skuId
     * @param num
     * @return
     */
    @GetMapping(value = "/countItem")
    public String countItem(@RequestParam(value = "skuId") Long skuId,
                            @RequestParam(value = "num") Integer num) {
        cartService.changeItemCount(skuId, num);
        return "redirect:http://cart.gulimall.com/cart.html";
    }

    /**
     * 删除商品信息
     *
     * @param skuId
     * @return
     */
    @GetMapping(value = "/deleteItem")
    public String deleteItem(@RequestParam("skuId") Integer skuId) {
        cartService.deleteIdCartInfo(skuId);
        return "redirect:http://cart.gulimall.com/cart.html";

    }

}
